JPH0366549A - Correcting method for straightness - Google Patents
Correcting method for straightnessInfo
- Publication number
- JPH0366549A JPH0366549A JP19695789A JP19695789A JPH0366549A JP H0366549 A JPH0366549 A JP H0366549A JP 19695789 A JP19695789 A JP 19695789A JP 19695789 A JP19695789 A JP 19695789A JP H0366549 A JPH0366549 A JP H0366549A
- Authority
- JP
- Japan
- Prior art keywords
- spindle head
- ram
- axis
- headstock
- extreme end
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims description 13
- 238000001514 detection method Methods 0.000 claims description 5
- 230000005484 gravity Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 1
Landscapes
- Automatic Control Of Machine Tools (AREA)
- Numerical Control (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は工作機械の例えば移動軸の真直度誤差に起因す
る軸先端部の上下位置を補正する真直度補正方法に関す
る。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a straightness correction method for correcting the vertical position of a shaft tip caused by a straightness error of a moving axis of a machine tool, for example.
〈従来の技術〉
工作機械として、例えば主軸姿勢制御形の横形５軸制御
加工機がある。この横形Ｓ軸制御加工機の構成は、互い
に直交する基本直線移動のための３軸（Ｘ軸、Ｙ軸、Ｚ
軸）と、主軸頭を支持する水平なラム（移動軸）の軸回
りの回＠（Ｃ軸）とその主軸頭の上下方向の回動（Ａ軸
）との組合せが一般的である。<Prior Art> As a machine tool, there is, for example, a horizontal five-axis control processing machine of the spindle attitude control type. The configuration of this horizontal S-axis control processing machine consists of three axes (X-axis, Y-axis, Z-axis) for basic linear movement that are orthogonal to each other.
A common combination is rotation around the axis of a horizontal ram (moving axis) that supports the spindle head (C axis), and vertical rotation of the spindle head (A axis).
第５図は従来の真直度補正方法を示すラムの一部切欠き
側面図である。第５図に示すように、主軸台１は図示し
ない工作機械本体に垂直方向（第５図において上下方向
）に移動自在に支持されている。この主軸台１には水平
方向に長いラム２がその長手方向（同図左右方向）移動
自在に支持されている。そして、このラム２の先端部に
は図示しない主軸頭が取付けられている。而して、ラム
２を軸方向に移動することで、主軸頭の主軸に固定され
た工具等の送り方向の位置決めを行う。FIG. 5 is a partially cutaway side view of a ram showing a conventional straightness correction method. As shown in FIG. 5, the headstock 1 is supported by a machine tool main body (not shown) so as to be movable in the vertical direction (up and down in FIG. 5). A horizontally long ram 2 is supported on the headstock 1 so as to be movable in the longitudinal direction (left and right directions in the figure). A spindle head (not shown) is attached to the tip of the ram 2. By moving the ram 2 in the axial direction, a tool or the like fixed to the spindle of the spindle head is positioned in the feeding direction.
上述した横形５軸制御加工機の場合、第５図に示すよう
に、ラム２を移動して主軸頭１から突出させていくと、
その移動が水平方向の移動となるため重力の影響を受け
、ラム２が撓んでその先端部３が下方に沈み込むと共に
前面４が傾いて真直度に誤差が発生し、装置としての精
度が低下してしまう。そのため、従来はラム２ζこテン
レシンバー５を内蔵し、このラム２の移動量に応じて油
圧６を加えることでラム２が撓みによる先端部３の沈み
込み及び前ＷＪ４の傾きを修正していた。In the case of the above-mentioned horizontal 5-axis control processing machine, as shown in FIG. 5, when the ram 2 is moved to protrude from the spindle head 1,
Since the movement is in the horizontal direction, it is affected by gravity, causing the ram 2 to bend and its tip 3 to sink downward, and the front surface 4 to tilt, causing an error in straightness and reducing the accuracy of the device. Resulting in. Therefore, conventionally, the ram 2ζ has a built-in tension lever 5, and by applying hydraulic pressure 6 according to the amount of movement of the ram 2, the sinking of the tip 3 and the inclination of the front WJ 4 due to the flexure of the ram 2 have been corrected.
〈発明が解決しようとする課題〉
従来の真直度補正方法にあっては上述したヨウ１ζ、ラ
ム２に内蔵されたテンシ冒ンバー５の作動によって機械
的にラム２の撓みを修正していた。ところが、テンシ旨
ンバー５によってラム２の撓みは多少修正されるものの
、テンジョンバー５も実際には変形するものであるため
、ラム２の前面４の傾きを適正に修正することは困難で
あり、従来は、ラム２の上下位置を正確に補正すること
はできなかった。<Problems to be Solved by the Invention> In the conventional straightness correction method, the deflection of the ram 2 was mechanically corrected by operating the above-mentioned yaw 1ζ and the tension lever 5 built into the ram 2. However, although the deflection of the ram 2 is somewhat corrected by the tension bar 5, since the tension bar 5 actually deforms, it is difficult to properly correct the inclination of the front surface 4 of the ram 2. Conventionally, it has not been possible to accurately correct the vertical position of the ram 2.
本発明はこのような問題点を解決するものであって、正
確に工作機械の移動軸の真直度の補正を行うことのでき
る真直度補正方法を提供することを目的とする。The present invention is intended to solve these problems, and an object of the present invention is to provide a straightness correction method that can accurately correct the straightness of a moving axis of a machine tool.
く課題を解決するための手段〉
上述の目的を達成するための本発明の真直度補正方法は
、垂直方向に移動自在な主軸台に水平方向に延設された
移動軸がその延設方向に移動自在に支持され、該移動軸
先端部に主軸頭本体が該移動軸の軸回りに回動自在に支
持され、該主軸頭本体に主軸頭が前記移動軸と直交する
水平軸をもって回動自在に支持された工作８！械におい
て、前記主軸台から突出する前記移動軸の突出量に応じ
て変化する前記主軸先端の上下位置を検出し、その検出
結果に基づいて前記主軸台の垂直移動及び前記主軸頭の
回動によって前記主軸先端の上下位置を補正するように
したことを特徴とするものである。Means for Solving the Problems> The straightness correction method of the present invention for achieving the above-mentioned object has a straightness correction method in which a vertically movable headstock is provided with a horizontally extending moving shaft in the extending direction. The spindle head body is supported movably at the tip of the moving shaft, and the spindle head body is rotatably supported around the axis of the moving shaft, and the spindle head is rotatable on the spindle head body about a horizontal axis perpendicular to the moving axis. Work 8 supported by! In the machine, the vertical position of the tip of the spindle, which changes depending on the amount of protrusion of the moving shaft protruding from the headstock, is detected, and based on the detection results, vertical movement of the spindle and rotation of the spindle head are performed. The present invention is characterized in that the vertical position of the tip of the spindle is corrected.
く作 用〉
移動軸を軸方向に移動させろと重力の影響によって主軸
先端の上下位置が変化する。この変化量を検出し、その
検出結果に基づいて主軸台を移動させると共に主軸頭を
回動させることで主軸先端の上下方向における実際の位
置を理論上の位置に補正する。When the moving axis is moved in the axial direction, the vertical position of the tip of the spindle changes due to the influence of gravity. This amount of change is detected, and based on the detection result, the headstock is moved and the spindle head is rotated to correct the actual vertical position of the spindle tip to the theoretical position.
く実 ＃１ 例〉
以下、図面に基づいて本発明の実施例を詳細に説明する
。Example #1 Example Hereinafter, examples of the present invention will be described in detail based on the drawings.
第１図は本発明の一実施例に係る真直度補正方法を示す
横形Ｓ軸制御加工機の傾斜図、第２図及び第３図はＹ−
Ｚ平面におけろ作用説明図、第４図はＸ−Ｙ平面におけ
る作用説明図である。FIG. 1 is an inclined view of a horizontal S-axis control processing machine showing a straightness correction method according to an embodiment of the present invention, and FIGS. 2 and 3 are Y-
FIG. 4 is an explanatory diagram of the action in the Z plane, and FIG. 4 is an explanatory diagram of the action in the XY plane.
第１図に示すように、主軸台１１は送り台１２に支持さ
れてＸ軸方向及びＹ軸方向に移動自在となっている。こ
の主軸台１１には水平方向に延設された移動軸としての
ラム１３がその延設方向、即ち、Ｚ軸方向に移動自在に
支持されている。そして、このラム１３の先端部には主
軸頭本体１４がラム１３の軸回り、即ち、Ｃ軸回りに回
動自在に支持されている。更に、主軸頭本体１４に１よ
主軸１５を備える主軸頭１６がラム１３（Ｃ軸）と直交
する水平軸（Ａ軸）１７をもって回動自在に支持されて
いる。As shown in FIG. 1, the headstock 11 is supported by a feed table 12 and is movable in the X-axis direction and the Y-axis direction. A ram 13 serving as a moving shaft extending horizontally is supported on the headstock 11 so as to be movable in the extending direction, that is, in the Z-axis direction. A spindle head main body 14 is supported at the tip of the ram 13 so as to be rotatable around the axis of the ram 13, that is, around the C axis. Further, a spindle head 16 having a spindle 15 on the spindle head main body 14 is rotatably supported by a horizontal axis (A-axis) 17 orthogonal to the ram 13 (C-axis).
また、前記主軸頭本体１４にはＣ軸及びＡ軸の回動を制
御する図示しない制御装置が設けられている。Further, the spindle head main body 14 is provided with a control device (not shown) that controls rotation of the C-axis and the A-axis.
以下、本実施例の真直度補正方法について説明する。The straightness correction method of this embodiment will be explained below.
第２図に示すように、ラム１３を軸方向に移動させて主
軸台１１から突出させていくと、重力の影響によってラ
ム１３の先端部が沈み込ノシで主軸頭１６の先端におけ
ろ上下位置が変化する。即ち、主軸頭１６先端は理論上
はＰ位置になければならないが、ラム１３の撓みによっ
て実際にはＱ位置にある。主軸本体１４に内蔵された制
御装置はこの変化量を検出しその検出結果に基づいて、
まず、Ａ軸（水平軸１７）回転中心位置を補正する。即
ち、ＮＣｆ１ｌ＃によって予め理論上のＡ軸中心位置を
原点位置として設定し、検出した実際のＡ軸中心位置が
この原点位置と一致させる。As shown in FIG. 2, when the ram 13 is moved in the axial direction and protruded from the headstock 11, the tip of the ram 13 sinks under the influence of gravity and is placed at the tip of the spindle head 16 vertically and downwardly. The position changes. That is, although the tip of the spindle head 16 should theoretically be in the P position, it is actually in the Q position due to the deflection of the ram 13. The control device built into the spindle body 14 detects this amount of change, and based on the detection result,
First, the A-axis (horizontal axis 17) rotation center position is corrected. That is, the theoretical A-axis center position is previously set as the origin position using NCf1l#, and the detected actual A-axis center position is made to coincide with this origin position.
そのため、第３図に示すように、主軸台１１をＹ軸方向
に沿って距離δだけ上方に移動させ、これによってＡ軸
中心位置が補正されろ。Therefore, as shown in FIG. 3, the headstock 11 is moved upward by a distance δ along the Y-axis direction, thereby correcting the A-axis center position.
次に、主軸頭１６の回動角度を補正する。Next, the rotation angle of the spindle head 16 is corrected.
第２図に示すように、Ｃ軸（こ対する主軸頭１６の角度
は前述した制御装置によってθ辷検出されている。従っ
て、第３図に示すように、撓んだラム１３のＣ′軸に対
する理論上の主軸頭１６（Ｐ位置）の角度θ′を検出し
、実際の主軸頭１６の角度θをθ′に修正するために主
軸頭１６をＡ軸回りに回動させることで主軸頭１６の角
度が補正されろ。As shown in FIG. 2, the angle of the spindle head 16 relative to the C-axis is detected by the aforementioned control device. Therefore, as shown in FIG. The spindle head 16 is rotated around the A axis to correct the actual angle θ of the spindle head 16 to θ'. 16 angles should be corrected.
而して、主軸ｇＡ１６先端の実際の位１１Ｑは理論上の
位置Ｐと一致する。Therefore, the actual position 11Q of the tip of the main shaft gA16 coincides with the theoretical position P.
なお、この主軸頭１６の角度補正量は主軸頭本体１４の
回動位置によって異なるものである。即ち、第４図に示
すように、主軸頭本体１４（Ｃ軸）の割出し角度βが９
０°あるいは２７０°の時は主軸頭１６の角度補正は不
要となり、割出し角度βが００あるいは１８０’の時は
主軸頭１６の角度補正量は最大となる。このように主軸
頭１６の角度補正量は主軸頭本体１４の回動位置によっ
て異なるものであり、その補正量は制御装置によって検
出されたラム１３の突出量及び主軸頭本体１４の割出し
角度【こ基づいて計算される。Note that the angle correction amount of the spindle head 16 differs depending on the rotational position of the spindle head main body 14. That is, as shown in FIG. 4, the indexing angle β of the spindle head body 14 (C axis) is 9.
When the index angle β is 0° or 270°, there is no need to correct the angle of the spindle head 16, and when the index angle β is 00 or 180′, the amount of angle correction of the spindle head 16 is maximum. As described above, the angle correction amount of the spindle head 16 differs depending on the rotational position of the spindle head main body 14, and the correction amount is determined by the protrusion amount of the ram 13 detected by the control device and the indexing angle of the spindle head main body 14. Calculated based on this.
〈発明の効果〉
以上、詳細に説明したように、本発明の真直度補正方法
によれば、主軸台から突出する移動軸の突出量に応じて
変化する主軸先端の上下位置を検出し、その検出結果に
基づいて主軸台の垂直移動及び主軸頭回動によって主軸
先端の上下方向における実際の位置を理論上の位置に補
正するようにしたので、移動軸内に機械的な装置を内蔵
することなく簡単且つ正確に真直度の補正を行うことが
できろ。<Effects of the Invention> As described above in detail, according to the straightness correction method of the present invention, the vertical position of the tip of the spindle that changes depending on the amount of protrusion of the moving shaft protruding from the headstock is detected, and the vertical position of the tip of the spindle is detected. Based on the detection results, the actual position in the vertical direction of the spindle tip is corrected to the theoretical position by vertically moving the headstock and rotating the spindle head, so a mechanical device can be built into the moving axis. It is possible to easily and accurately correct straightness without any problems.
第１図は本発明の一実施例に係る真直度補正方法を示す
横形５軸制御加工機の斜視図、第２図及び第３図はＹ−
Ｚ平面におけろ作用説明図、第４図Ｘ−Ｙ平面における
作用説明図、第５図は従来の真直度補正方法を示すラム
の一部切欠き側面図である。
図 面 中、
１１は主軸台、
１３はラム（移動軸、Ｃ軸）、
１４は主軸頭本体、
１５は主軸、
１６は主軸頭、
１７は水平軸（Ａ軸）である。
第１図
第２図
Ｑ
第４図
第５図FIG. 1 is a perspective view of a horizontal 5-axis control processing machine showing a straightness correction method according to an embodiment of the present invention, and FIGS. 2 and 3 are Y-
FIG. 4 is an explanatory diagram of the action in the Z plane, FIG. 4 is an explanatory diagram of the action in the X-Y plane, and FIG. 5 is a partially cutaway side view of the ram showing the conventional straightness correction method. In the drawing, 11 is the headstock, 13 is the ram (moving axis, C axis), 14 is the spindle head body, 15 is the spindle, 16 is the spindle head, and 17 is the horizontal axis (A axis). Figure 1 Figure 2 Q Figure 4 Figure 5
Claims (1)
動軸がその延設方向に移動自在に支持され、該移動軸先
端部に主軸頭本体が該移動軸の軸回りに回動自在に支持
され、該主軸頭本体に主軸頭が前記移動軸と直交する水
平軸をもって回動自在に支持された工作機械において、
前記主軸台から突出する前記移動軸の突出量に応じて変
化する前記主軸先端の上下位置を検出し、その検出結果
に基づいて前記主軸台の垂直移動及び前記主軸頭の回動
によって前記主軸先端の上下位置を補正するようにした
ことを特徴とする真直度補正方法。A horizontally extending moving shaft is supported on a vertically movable headstock so as to be movable in the extending direction, and a spindle head body is rotatable around the moving shaft at the tip of the moving shaft. A machine tool in which the spindle head is rotatably supported by the spindle head body with a horizontal axis perpendicular to the movement axis,
The vertical position of the spindle tip, which changes depending on the amount of protrusion of the moving shaft protruding from the headstock, is detected, and based on the detection results, the spindle tip is moved vertically by moving the spindle head and rotating the spindle head. A straightness correction method characterized by correcting the vertical position of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19695789A JPH0366549A (en) | 1989-07-31 | 1989-07-31 | Correcting method for straightness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19695789A JPH0366549A (en) | 1989-07-31 | 1989-07-31 | Correcting method for straightness |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0366549A true JPH0366549A (en) | 1991-03-22 |
Family
ID=16366462
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19695789A Pending JPH0366549A (en) | 1989-07-31 | 1989-07-31 | Correcting method for straightness |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0366549A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5252011A (en) * | 1992-04-03 | 1993-10-12 | Jobs S.P.A. | Mobile-structure machine tool for rapid machining of models in particular |
| US7283889B2 (en) | 2003-02-19 | 2007-10-16 | Fanuc Ltd | Numerical control device, and numerical control method |
| JP2011121157A (en) * | 2009-12-14 | 2011-06-23 | Mitsubishi Heavy Ind Ltd | Horizontal boring machine |
| CN112453937A (en) * | 2020-11-20 | 2021-03-09 | 一汽解放汽车有限公司 | Side-fixed type cutter handle installing and adjusting device and method for machining center |
| JP2021091040A (en) * | 2019-12-10 | 2021-06-17 | Dmg森精機株式会社 | Machine tool |
-
1989
- 1989-07-31 JP JP19695789A patent/JPH0366549A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5252011A (en) * | 1992-04-03 | 1993-10-12 | Jobs S.P.A. | Mobile-structure machine tool for rapid machining of models in particular |
| US7283889B2 (en) | 2003-02-19 | 2007-10-16 | Fanuc Ltd | Numerical control device, and numerical control method |
| JP2011121157A (en) * | 2009-12-14 | 2011-06-23 | Mitsubishi Heavy Ind Ltd | Horizontal boring machine |
| JP2021091040A (en) * | 2019-12-10 | 2021-06-17 | Dmg森精機株式会社 | Machine tool |
| CN112453937A (en) * | 2020-11-20 | 2021-03-09 | 一汽解放汽车有限公司 | Side-fixed type cutter handle installing and adjusting device and method for machining center |
| CN112453937B (en) * | 2020-11-20 | 2022-04-01 | 一汽解放汽车有限公司 | Side-fixed type cutter handle installing and adjusting device and method for machining center |
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